rc.fw_defaults: increase acceptance radius which is used by navigator to generate virtual waypoints (RTL etc.)
Navigator: set loiter WP correctly
Commander: add guard for parachute deployment
Merge pull request #667 from PX4/fix_disable_parachute

Commander: add guard for parachute deployment
decrease MC_PITCHRATE_P for TBS Discovery
Merge pull request #666 from PX4/fix_loiter

Navigator: set loiter WP correctly
Merge remote-tracking branch 'px4/beta' into beta_mavlink
Mavlink and navigator: handle current waypoint onboard